Do you need to know what two numbers multiply to 9 and add to 21? In other words, do you need to find the two numbers whose product is 9 and sum is 21? No problem! The two numbers that multiply to 9 and add to 21 are as follows:
0.43769
20.56231
Here is the math to prove that our above answer to "What two numbers multiply to 9 and add to 21?" is correct:
Multiply:
0.43769 × 20.56231 ≈ 9
Add
0.43769 + 20.56231 = 21
The answers above are rounded if necessary. Therefore, if you double check that the answer above is correct by using a calculator, you may find it to be slightly off.
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